词源趣谈 | as dead as the dodo 早已过时

as dead as the dodo 或 as dead as a dodo 形容某物已经彻底过时，或再也不存在了。

该比喻指的是毛里求斯一种已经绝迹、不会飞的鸟。这种鸟比天鹅更大、更重，大概灭绝于18世纪。